On Start the Week Tom Sutcliffe discusses what Islam means in the modern world. Graeme Wood has spent his career getting to know Islamist fundamentalists to try to understand the apocalyptic ideology and theology at the heart of the so-called Islamic State. Sara Khan campaigns to reclaim her faith from extremism, while Ziauddin Sardar argues that Islam demands reason and critical inquiry from its believers. Loretta Napoleoni 'follows the money' to uncover the millions made by those exploiting the destabilisation of Syria and Iraq and the rise of ISIS. Producer: Katy Hickman

Photo: Sara Khan Credit: Joe McGorty.